Method and system of laser cutting a sheet material

a technology of laser cutting and sheet material, applied in the direction of manufacturing tools, glass making apparatus, welding/soldering/cutting articles, etc., can solve the problems of chucking an item, adding a level of cost and complexity to the process

Inactive Publication Date: 2015-05-28
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a method for cutting a sheet material on a support using a laser beam while protecting the support from damage. This is achieved by using a porous barrier made of sheet material between the sheet material and the support. The laser beam is focused on a target point and a relative motion is created between the focused laser beam and the sheet material to cut the sheet material along a predetermined path while the porous barrier shields the support from damage. The technical effect of this method is improved edge finish of the cut sheet material with reduced chips and the protection of the support from damage.

Problems solved by technology

This interaction between the green laser and chuck created damage to the chuck, rendering the chuck an item that needs to be serviced or replaced periodically.
Although a carrier plate can be modified to potentially accept multiple devices, this adds a level of cost and complexity to the process, not to mention the lead time required to have the carrier plates manufactured or modified.

Method used

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  • Method and system of laser cutting a sheet material
  • Method and system of laser cutting a sheet material
  • Method and system of laser cutting a sheet material

Examples

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Embodiment Construction

[0017]In the following detailed description, numerous specific details may be set forth in order to provide a thorough understanding of embodiments of the invention. However, it will be clear to one skilled in the art when embodiments of the invention may be practiced without some or all of these specific details. In other instances, well-known features or processes may not be described in detail so as not to unnecessarily obscure the invention. In addition, like or identical reference numerals may be used to identify common or similar elements.

[0018]FIG. 1 shows an illustrative system 100 for cutting a sheet material 102 using a laser beam. The sheet material 102 may be made of a single layer of material or made of multiple layers of different materials. In one embodiment, the sheet material 102 is selected from a glass sheet, a glass-ceramic sheet, an ion-exchanged glass sheet, an ion-exchanged glass-ceramic sheet, and a touch panel. In one embodiment, the touch panel includes a l...

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Abstract

A method of cutting a sheet material includes mounting the sheet material on a support and forming a porous barrier between the sheet material and the support by interposing at least one sheet of porous material between the sheet material and the support. The method includes focusing a laser beam at a target point relative to the sheet material on the support. A relative motion is effected between the focused laser beam and the sheet material such that the focused laser beam moves along a predetermined path on the sheet material to cut the sheet material along the predetermined path while the porous barrier shields the support from damage by the focused baser beam.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of priority under 35 U.S.C. §119 of U.S. Provisional Application Ser. No. 61 / 908989 filed on Nov. 26, 2013 the contents of which are relied upon and incorporated herein by reference in their entirety.FIELD[0002]The field relates to laser cutting of sheet materials, especially those comprising ion-exchanged glass.BACKGROUND[0003]Ion-exchanged glass is widely used in the commercial electronics industry as cover glass for cell phones, handheld tablet size devices, and other devices with touch functionality. Wide use of ion-exchanged glass in this industry is due to the high scratch resistance and overall durability of the glass, which comes from the ion-exchange process. Ion-exchanged glass has compressive stress on its surface and tensile stress on its interior. When force is applied to the ion-exchanged glass, any tension induced near the glass surface will be reduced by the surface compression stress. T...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): C03B33/09
CPCC03B33/091B23K26/18C03B33/0222C03B33/07B23K26/0736B23K26/083B23K26/0622B23K26/57B23K26/55B23K2103/50B23K2103/52
InventorTU, KUN HUNGWEBER, CRAIG STEVEN
OwnerCORNING INC